4.88 Ring and Pinion Gear Kit

The USA Standard Gear ZGK2042 is a comprehensive ring and pinion gear and limited-slip differential kit engineered to significantly upgrade the performance of compatible Ford 8.8-inch rear axles. This kit boasts an aggressive 4.88 gear ratio, ideal for enthusiasts seeking dramatic improvements in acceleration and torque. Complementing the gears is the Yukon Dura Grip clutch-style limited slip differential, built with a high-strength nodular iron case, forged 4320 chromoly spider gears, and composite clutches, ensuring smooth yet aggressive traction and a fully rebuildable unit designed for high torque loads. Designed specifically for Ford 8.8-inch rear ends with a 10-bolt rear cover and 31-spline axles, this kit includes precise components such as axle bearings with a 2.53-inch diameter and an inner pinion bearing with a 3.250-inch outer diameter. Rigorous in-house dimensional and fitment testing ensures that the components meet stringent rebuilding standards. Installation of the USA Standard Gear ZGK2042 is estimated to take approximately 3 hours and requires light to moderate mechanical skill. This kit is application-specific and fits 2005-2010 Mustang GT and GT500 models. It's important to note that one customer review indicated this product does not fit a 2014 Mustang GT, stating it was too thick for installation.